Energy-Efficient Centrifugal Fan Series | XFW-WW Series Centrifugal Fans

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 XFW-WW Series Applications The XFW-WW series falls within the medium flow and medium pressure range, achieving a maximum efficiency of 87%. It can be used as a blower/exhaust fan, metallurgical exhaust fan, blower/exhaust fan for circulating fluidized beds (35-410 tons/hour), primary fan, secondary fan, dust removal fan for metallurgical dust removal equipment in steel mills, as well as in mine ventilation systems and general ventilation systems.     The XFW-WW fan fills a gap in the dimensionless curve pressure coefficient of 0.5. It demonstrates superior performance and high efficiency in fan selection. By reducing the unit size, it can replace most operating points of the XFW-SQ(II) and XFW-SB series while meeting the above applications. Compared to the XFW-SQ(II) and XFW-SB in systems with excessively high flow rates, while delivering high efficiency and energy savings.

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XFW-WW Series Selection Advantages

Type Example 1: Design parameters for an induced draft fan: Flow rate = 155,529 m³/h; Total pressure = 7031 Pa; p1 = 0.85 kg/m. Selection: XFW-WWN16D (N=1480 r/min) is currently available. If XFW-WW is unavailable (no dimensionless curve data provided here), XFW-SBN 16.9D (N=1480 r/min) must be selected.

Table 1: Dimensional Performance Comparison of XFW-WWN16D and XFW-SBN16.9D at Identical Rotational Speed and Inlet Density

As shown in Table 1: At the same rotational speed and density, to achieve the same performance parameters, selecting XFW-SB requires N16.8, while selecting XFW-WW only requires N16. Fan efficiency increases by 10.1%, and impeller power decreases by 9.3%.

Type Example 2:     The following parameters represent a specific operating point for No.12D from XFW-SQ(II) catalogs produced by multiple manufacturers, at N=1480 r/min and p1=0.742 kg/m²: Flow rate = 62850 m³/h; Total pressure = 2638 Pa; Fan efficiency = 75.4%; Impeller power = 61.06 kW. With the introduction of the XFW-WW series models, XFW-WW11.3D can be selected for a specific dimensionless curve segment (previously blank). Table 2 presents the performance comparison between XFW-WW11.3D and XFW-SQ(II) No.12D at identical rotational speeds and inlet densities.

As shown in Table 2: At the same rotational speed and density, to achieve the same performance parameters, the XFW-SQ(II) requires the No. 12D impeller, while the XFW-WW only needs the No. 11.3D impeller. This results in an 11% increase in fan efficiency and an 8.8% reduction in impeller power consumption.

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 Advantages of the XFW-WW Series Fans 

        Like the XFL-SW series, the XFW-WW series fans utilize numerical simulation calculations of the three-dimensional flow field within the impeller to optimize the dimensions of the flow passage. This ensures the blade inlet angle aligns with the actual airflow direction, minimizing blade inlet wear.     In contrast, models like XFW-SB and XFW-SQ(Ⅱ) are designed based on two-dimensional flow theory. Practical experience has shown severe inlet wear on their blades. The XFW-WW resolves this inlet wear issue present in XFW-SB and XFW-SQ(Ⅱ) type fans, thereby extending the service life of the impeller.     In summary, the XFW-WW demonstrates superior aerodynamic performance compared to similar fans. Its advantages—high efficiency, low noise, dimensionless performance range, and minimal inlet wear—ensure broad application potential and strong market competitiveness. 

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XFW-WW Fan Specifications